Note 4 - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share [Abstract]
Numerator for basic and diluted earnings per share - net income	$ 2,465	$ 1,887	$ 5,059	$ 6,005
Denominator for basic earnings per share - weighted average shares outstanding	3,665,695	3,598,545	3,660,435	3,593,482
Denominator for diluted earnings per share - adjusted weighted average shares outstanding	3,665,695	3,598,545	3,660,435	3,593,482
Earnings per share - basic	$ 0.67	$ 0.52	$ 1.38	$ 1.67
Earnings per share - diluted	$ 0.67	$ 0.52	$ 1.38	$ 1.67